Apparatus for feeding liquid fuel to internal-combustion engines



s. L. J. VINDRIER. APPARATUS FOR FEEDING LIQUID FUEL T0 INTERNALCOMBUSTION ENGINES.

APPLICATION FILED AUGZS I 192l- Patented May 28, 1922.

2 SHEETS-SHEET Ma mi W l w 1 W MI WWW Km WWW/6P )WM S. L. J. VINDRIER.APPARATUS FOR FEEDING uoum FUEL T0 INTERNAL oomsusnom ENGINES.

APPLICATION FILED AUG-251 192i.

Patented May 23, W22.

2 SHEETS-SHEET 2.

ST'JEJPANE LOUIS JUSH VINDRIER, 01E LYON, FRANCE, ASSIGNO-R TO THE FIRMMATEU, DURANJD ET 01E, 01F LYON, FRANCE.

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Application filed August 25, 1921.

To all whom it may concern:

Be it known that T, S'rrir-HANE Louis JOSEPH VINDRIER, of Lyon, France,citizen of the French Republic, have invented certain new-and usefulImprovements in Apparatus for Feeding Liquid Fuel to Internal-Combustion Engines, of which the following is a specification.

The present invention relates to impr0vements in apparatus for feedingliquid fuel to internal combustion engines or the like.

According to the invention the movements of the liquid fuel in the feedapparatus are transmitted by means of a float and bymeans of certainlevers to mechanism op erating to put the apparatus in communicationeither with the source of suction or with the atmosphere.

The power derived from the movement of the float caused by the variationof level of the liquid is stored up by means of the mechanism formingthe object of the invention which restores the power by a singlemovement to the lever governing the closing valves. This result isobtained by varying the angle which the direction of the force makes ona roller, with the surface on which the roller rolls, this force beingexerted either by means of a spring or by any means. The angle inquestion at first acute becomes greater and greater; the spring or thedevice which bears on the roller is tensioned. by this movement andreaches its maximum tension when the angle reaches 90. In effect at thismovement'the component of the force directed according to movements arethus restored at a single stroke and the angle becomes briskly obtuse.

At this moment if as a basic angle the supplement of said obtuse angleis taken and it p is caused to vary as previously theforce exerted onthe roller will be again stored. and again briskly restituted when theangle con sidered having slightly exceeded 90 the 1' TUS FOR FEEDINGLIQUID FUEL TO IN 1 i specification of Letters Patent.

.: ancoiunusriou Enemies.

Patented May 23-, IW2%. Serial No; 495,366.

component according to the surface of rolling of the roller will havechanged direction, and so on.

In the annexed drawing given by way of example.

Fig. 1 is a vertical central section of a feed apparatus, for liquidfuel actuated by suct1on the closing members of which are valves.

2 is a section'on line 2-2 of Fig. 1. Fig. 3 is a view. in section of amodification. 1

The body of the apparatus given by example 1s formed of two superposedreservoirs an upper reservoir a in which the float is housed togetherwith the recuperating-mechanlsm and a lower reservoir 6. The first canbe put into communicationwith the atmosphere or with the source ofsuction while the second which is fed with petrol by the firstconstantly communicates with the atmosphere by a tube 0.

The upper reservoir a is closed by a cover (l which carries mechanismthat will be hereinafter described.

The float e governs by a rod 7 a lever g which oscillates round the axleit carried by a bracket k integral with the cover d. On the bracket isalso articulated at 7' a two armed double lever i having in its lowerarms two slots i in which slides the axle k of a roller I which issecured to and held away from the axle j by a pair of springs m.

The lever g isprovided with a Hat part g on which the roller Z bears.The extremity of the horizontal arm '5 of the lever '5 engages in theend of a lever n which oscillates round the axle 0 carried by thebracket 0 This lever governs the suction valve p as well as the valve 9for communication with the atmosphere. These valves are arranged in sucha manner that one is open when the other is closed and vice versa. Aball p acts as a retaining valve in case the suction might cease for afew moments or even be transformed into a momentary pressure.

The housing of the valve q is closed by a stopper r provided with holes1' and communicates with the tube 0 by a channel 0 The housing of thevalve 70 is closed by a -'screw threaded stopper 8 and communicates withthe source of suction by the channel t and pipe t.

The channel a carrying the guide 7) for the float rod forms acommunication between the upperQreservoir a and the lower reservoir b. Aflap valve 09 is applied against its orifice when suction is exerted inthe reservoir a. The 'flow of the liquid takes place through the pipe 2and the arrival of the liquid by the tube .2. A filter w arrests anyimpurities which might be drawn along before flowing into the reservoira.

The operation of the apparatus is as follows. At the relative positionsof the parts shown in Fig. 1 the suction valve 29 is open. The reservoira is then in communication by the channel t and the tube t with thesource of suction; the vacuum is formed in said reservoir; the valve 00closes against the member u; the liquid sucked through the tube .2 fallsinto the reservoir a and in rising therein lifts the fioate the rod f ofwhich causes the lever g to pivot round its axis it.

If one considers the angle (a) formed by the direction of the effort ofthe spring 6 on the roller Z with the flat part 9 of the lever 9 it canbe seen that when this lever rocks upwards this angle increases; theroller Z is pushed towards the axle j and the spring a is compressed.Directly the lever reaches the position shown in dotted lines Fig. 1 theright angle is slightly passed; the component of the force of the springa directed previously by the flat part 9' of the lever 9 towards theaxis of the apparatus changes direction and is directed towards theexterior of the apparatus which causes the lever 71 to rock and thesprings m to suddenly expand. The lever n drawn by the arm 2' of thelever oscillates round its axle 0 causing the sharp closure of thesuction valve p and the opening of the valve 9. The reservoir a is thusput in communication with the atmosphere and the liquid flows naturallyfrom the reservoir a into the reservoir 7;, then both are at atmosphericpressure.

WVhen the level has sufficiently fallen in the reservoir a by reason ofthe flow through the tube 3/, the float 6 draws by its rod f the leverg. The supplementary angle of the obtuse angle obtained at the end ofthe rising movement by the rocking of the lever z increases in its turnand when it has passed the right angle it produces again a change ofdirection of the component by the flat part of the lever g andconsequently the springs m. suddenly expand causing the lever i to rockwhich in resuming the position shown in full lines draws the lever 01,.The valve 9 closes intercepting the communication with the atmosphere atthe same time that the Valve p opens giving access to the source ofsuction and the same cycle recommences.

1n the modification shown in Fig. 3 the float e actuates the lever 2which,is articulated at 3 and is pivoted to the lever 4 and causes thelatter to rise or descend. The lever 4 has on one side of its upper parta double incline 4 4' The other side of the lever 4 is straight andbears on a roller 5 mounted on an axle 5 fixed on the arms 6 of thelever 6 which can pivot on the axle 7 and governs the valves p and q asin the previous construction.

The roller 8 which bears on the double incline 4 4 is mounted on aroller 8 which slides in two slots 6 of the arms of the lever 6. It ismaintained constantly supported against the inclines by two springs 9'(one on each side).

lVhen the float c rises it draws with it the lever 4 the upper incline 4of which moves the roller 8 and tension the springs 51. The angle whichthe axis of the spring makes with the incline at first acute becomessquare when, the roller 8 is at the summit of the incline thenin'nnediately this angle is slightly surpassed the springs retract andthe lever 6 rocks whilst actuating the valves p and g.

The suction being cut off and the communication with the atmosphereestablished the level falls in the reservoir a and the float e descends.The lower incline a of the lever 4 again tensions the springs q whilstshifting the roller 8 until the latter arrives at the summit of theincline. At this moment theright] angle is exceeded the springs Q expandsharply the lever 6 rocks and the valves 1) and g are returned to thepositions shown on the drawing; the suction pipe is'open and thecommunication with the atmosphere cut off and the cycle recommences.

\Vhat I claim as myinvention and desire to secure by Letters Patent ofthe United States is 1. In a device of the character described acontainer in which liquid rises and falls, a float in said containeractuated by said rising and falling liquid, means for guiding said floata lever connected to said float and actuated thereby, a second lever orroller mounted thereon a spring pressing said roller on a surface ofsaid first mentioned lever a third lever connected to said second leverand actuated thereby and valves actuated by said third lever.

2. Apparatus for feeding liquid fuel to internal combustion enginescomprising a container having upper and lower compartments means forsupplying liquid thereto, means for the outlet of liquid therefrom avertical tube forming communication between said compartments, a flapvalve at third lever connected to said second lever 10 the lower end ofsaid tube, a float in said and actuated thereby to actuate said valves.upper compartment, a lid for said upper In Witness whereof I have signedthis compartment a suction valve and an air in- P C fi at in he presenceof tWO Witlet valve in said lid a lever connected to said 1168865- floatand operated by the movement of the STIEPHANE LOUIS JOSEPH latter, asecond lever a roller mounted tliere- Witnesses: on, a spring pressingsaid roller against a JEAN GERMAN,

surface of said first mentioned lever and a LUCIANNE BOUERET.

